Noah Webster
Incumbent
INCUM'BENT, adjective [Latin incumbens, incumbo; in and cumbo, to lie down.]
1. Lying or resting on.
And when to move th'incumbent load they try.
2. Supported; buoyed up.
And fly incumbent on the dusky air.
3. Leaning on, or resting against; as incumbent stamens or anthers, in botany.
4. Lying on, as duty or obligation; imposed and emphatically urging or pressing to performance; indispensable.
All men, truly zealous, will perform those good works which are incumbent on all christians.
INCUM'BENT, noun. The person who is in present possession of a benefice, or of any office. [It is applied to civil officers as well as to ecclesiastical.]